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XivMitmLatencyMitigator

Double weave for everyone, including PC, Mac, and PS4 users. No more being forced to single weaving because you are physically far away from game servers.

If you're running a custom VPN server on linux, just run the script as root, and you're good to go.

If you're running Windows, you can use XivAlexander addon instead. You can use both solutions at the same time, in which case, XivAlexander will take precedence.

How to use

  1. If you have a linux machine running in same network, skip to 5.
  2. If you have a virtualization solution installed regardless of host operating system, add an empty virtual machine with only DVD Drive enabled without hard drive, mount linux installation ISO into VM, power on, and then skip to 5.
  3. For Windows: install Hyper-V, using Hyper-V-Enabler.bat.
    1. Open Hyper-V Manager. You can find this by typing so in Start Menu.
    2. Open Virtual Switch Manager on the menu at right.
    3. Add an External Virtual Switch.
    4. Select the adapter connected to the network which the machine you're going to play game from is in, then press OK.
  4. Create a new virtual machine.
    1. Open New Virtual Machine Wizard with New > Virtual Machine.
    2. Pick Generation 2 in Specify Generation.
    3. Write 256MB or above into Startup Memory in Assign Memory.
    4. Pick the new adapter you've set up from 3-4 in Connection in Configure Networking.
    5. Pick Attach a virtual hard disk later in Connect Virtual Hard Disk.
    6. Using default choices for everything else, finish the wizard.
    7. Open Settings at right bottom panel of Hyper-V Manager.
    8. Go to SCSI Controller at the left panel, and add a DVD Drive.
    9. Go to DVD Drive at the left panel, pick Image file:, click on Browse, and select a linux distribution of your choice.
    10. Go to Security, and turn off Enable Secure Boot.
    11. Go to Firmware, select DVD Drive, and press Move Up.
    1. Press OK.
    2. Press Connect... at the right bottom panel, and then power on the virtual machine.
  5. Run ip addr show to figure out your virtual machine's IP address. It should result in something like the following: 
    1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 00:15:5d:12:1d:00 brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.5/24 brd 192.168.0.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::215:5dff:fe12:1d00/64 scope link
       valid_lft forever preferred_lft forever
  6. Run iptables -t nat -A POSTROUTING -s <local_ip> -o <device_name> -j MASQUERADE, replacing:
    • <device_name> with the equivalent of eth0 on above output.
    • <local_ip> with the equivalent of 192.168.0.5/24 on above output.
  7. Copy ffxiv.exe from your local Windows/Mac game installation into the VM.
    • Download and run HFS, and then drag ffxiv.exe into its main interface.
    • You should be able to download that by typing curl -O ffxiv.exe http://<HFS-IP>/ffxiv.exe, replacing <HFS-IP> with the displayed IP address from HFS.
  8. Install gcc(g++) with 32-bit libraries.
    • For Arch, do pacman -S gcc
    • For Debian/Ubuntu, do apt install g++ gcc-multilib g++-multilib.
    • If this fails due to not enough free space, then you will have to install the operating system instead of running this on an installation media.
  9. Run curl https://raw.githubusercontent.com/Soreepeong/XivMitmLatencyMitigator/main/mitigate.py | python
  10. Configure your gaming device to use the virtual machine to route game traffic, replacing <vm_ip> with the equivalent of 192.168.0.5 on above output.
    • Windows: Run a Command Prompt as Administrator, and then run the following. 
      route add 204.2.229.0 mask 255.255.255.0 <vm_ip>
route add 124.150.157.0 mask 255.255.255.0 <vm_ip>
route add 183.111.189.0 mask 255.255.255.0 <vm_ip>
route add 195.82.50.0 mask 255.255.255.0 <vm_ip>
    • Mac: Run a Terminal, and the run the following. 
      sudo route -n add -net 204.2.229.0/24 <vm_ip>
sudo route -n add -net 124.150.157.0/24 <vm_ip>
sudo route -n add -net 183.111.189.0/24 <vm_ip>
sudo route -n add -net 195.82.50.0/24 <vm_ip>
    • PS4: Set up Static IP (Guide), but use <vm_ip> instead for Default Gateway.
  11. Run the game and see things get printed in the virtual machine, and if it does, it's working.
  12. When you're done, you can force quit the virtual machine without "safe" procedures.

License

Apache License 2.0